JDP advises that the calculation of flow rates needs to be considered when drainage pipes and fittings are being selected.
The diameter and gradient of the pipework determines the capacity of the drainage system.
JDP’s technical department is able to advise on the most appropriate solution for specifiers and contractors to use.
The company also offers a range of BS EN1401-1 underground drainage pipe and fittings from 82 to 160mm diameter.
Depending on the depth at which the drain is laid, access can be provided by inspection chambers, which cannot be entered by people, or manholes, which can.
Manholes and inspection chambers need to be placed so that they allow access to every length of drain. This means that maintenance inspection and the removal of debris can take place.
Manholes and inspection chambers should be provided at all changes in pipe diameter, direction on drains and gradient on drains.
They must also be provided at all drain junctions where cleaning is not otherwise possible and at the head of each length of drain.
As well as providing a range of concrete rectangular House Inspection chamber sections, JDP also provides developers and contractors with plastic inspection chambers.
For instance, the Axedo 600 Chamber is designed for use as demarcation chambers or main sewer or surface water inspection chambers. It can be installed at depth of up to 6 metres.
The Axedo comprises of a base unit with a 600mm shaft, sealing ring and restrictor cap.
The plastic chambers can be installed 50% faster than concrete chambers and are resilient to corrosion and concrete compounds.
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